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Finding the Fourth Proportional to 82,801.80, 124,202.70 and 74,766.60

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Solution

The fourth proportional to 82,801.80, 124,202.70 and 74,766.60 is: 112,149.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,801.80 : 124,202.70 = 74,766.60 : x
  2. Step 2: Convert to fraction form
    82,801.80/124,202.70 = 74,766.60/x
  3. Step 3: Cross multiply
    82,801.80x = 124,202.70 × 74,766.60
  4. Step 4: Simplify right side
    82,801.80x = 9,286,213,589.82
  5. Step 5: Solve for x
    x = 9,286,213,589.82/82,801.80
  6. Step 6: Final answer
    x = 112,149.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.